Isaac deybll



(No Model.)

DEYELL SPARK EXTINGUISHER.

No. 254,122 Patented Feb. 28,1882.

v UNITED STATES PATENT OFFICE.

I ISAAC DEYELL, or sT. THOMAS, ONTARIO, CANADA.-

SPARK-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 254,122, dated February 23, 1882.

Application filed December 12, 1881. (No model.)

tinguishers;- and I do hereby declare the following to a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

The object of my invention is to extinguish the sparks which issue from the smoke-stacks of engines. These sparks are a source of great danger, especially where portable engines are used as the motive power in thrashing or separating grain. -Myinvention is expressly adapted to this class of engines, although it is equally applicable to others of different construction.

It consists of a peculiar construction and combination of devices, which will be more fully hereinafter described and particularly claimed.

In the drawings, Figure l is an elevation of my device, showing its position in the smokestack of an engine. Fig. 2 is a vertical central section of the same.

Referring to the drawings, a is the smokestack of an' engine, broken away to show the spark-extinguisher.-

bis a hollow steam-receptacle provided with the annular steps or shoulders I), which are arranged in a downwardly and inwardly convergingdirection, as clearly shown in the drawings. These steps can be cast in one piece with the steam-receptacle, or formed in any other well-known way. Over this steam-receptacle b is secured by bolts and nuts, or by any othersuitable means, the perforated domeshaped cap 0. An annular space, 0, is left between this cap 0 and the receptacle 1) for the exit of steam, as will be more fully hereinafter described. The receptacle b and its cap 0 are mounted upon a pipe, d, which opens into such receptacle at its bottom. This pipe d passes down the center of the smoke-stack some distance and out at the side, and is connected directly with the boileror with the steam-chest,

so as to utilize the exhaust-steam. It is provided with a valve or stop cock, (1, to regulate the supply of steam. Upon the pipe d, just below thereceptacle b, is the blind joint 0, to which is secured the upper end of a pyramidal coil of pipe,f,which tapers downwardly and inwardly, as clearly shown in the drawings. This pipefpasses outat the side of the smoke-stack, and is connected in the same manner as pipe at with the boiler or steam chest, and is also provided with valve or stop cockf. This pipe f has a series of perforations, f located both on the inside and outside of the coil and just above the center of the pipe, so that the jets of steam escaping therefrom will be thrown in an inclined direction upwardly.

The operation of my device is as follows: When the engine,with my improved device attached thereto, is set in motion, the steamin the pipes d and f is allowed to pass into the spark-extinguisher by opening the valves 01 andf. The steam in the pipe fescapes into. the smokestack through the perforationsf tion of these perforations permits the jets of steam to pass in an inclined direction upwardly, so as not to interfere materially with the draft, and at the same time be effective in extinguishin g the sparks thrown in contact therewith. At the same time steam is admitted into the receptacle 1) through pipe d, and, passing out through the annular space 0', forms a wall of steam through which the sparks are obliged to pass before emerging from the stack.

1 have found it desirable in some instances to perforate the cap 0, so that'the steam escaping therefrom in diverging jets will assist the draft. An important feature of my device is the annular shoulders I), which form a series of abutting surfaces, against which any unextinguished sparks which may have passed through the jets of steam from the pipe f may strike and be thrown back in contact with the steam. It will thus be seen that it is practically impossible for any sparks to pass out of the stack unextinguished.

I am aware that devices have been employed similar in some respects to parts of my sparkextinguisher, and I do not wish to lay claim to any such construction; but

What I do claim is- I 1. The spark-extinguisher for smoke-stacks,

The locaconsisting of the steam receptacle 1), having the exterior steps or shoulders, b and cap 0, so arranged thereon as to leave the annular space 0, the whole being connected with the source 5 of steam-supply through pipe d, and the coil of perforated pipef, connected with the source of supply, all being combined and operating substantially as shown and described.

2. In a spark-extinguisher, the steam-recepro tacle I), provided with the series of steps or shoulders I), the cap 0, and the annular space or opening 0, as and for the purpose stated.

3. In a spark-extinguisher, the steam-receptacle I), provided with the series of steps or shoulders b, the annular space or opening 0, I5 and theperforated cap a, substantially as shown and described.

ISAAC DEYELL.

Witnesses:

W. 'l. MILLER, OTTO HonnroK. 

